Charles f



(No Model.)

O. P. TAYLOR.

ELEVATOR.

No. 425,152. Patented Apr. 8, 1890.

I" WITNESSES? UNITED STATES PATENT OFFICE.

. CHARLES F.-TAYLOR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO ABRAM LOUGHRIDGE, OF SAME PLACE.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 425,152, dated April 8, 1890, Application filed October 21, 1889. Serial No. 327,668. (No model.) I

" which the following is a specification.

My invention relates to improvements in devices for automatically bpening and closing the doors in hatchways upon the passage of an elevator; and my invention consists of a disk of metal eccentrically pivoted to the guides or stationary frame-work of the elevator, and which is furnished with .two arms or levers, the upper one of which is adapted to be engaged by the elevator-cage upon its descent or by a friction-pulley carried by this cage, and the lower one of which is pivoted to one end of a rod, the other end of which is suitably pivoted to the hatchway-door. For convenience the hatchway-door is usually made in two pieces, or double. These pieces are hinged in a suitable manner to the sides of the hatchway, and each piece is operated by an opening device of its own. The disk is pivoted eccentrically, and the arms or levers are so placed upon it as to in a manner counterbalance the weight of the doors when said doors are closed, and when said doors are opened the disk and arms take such a position that after the passage of the elevator-cage their weight, acting on the said doors through the rod which connects the doors and the lower arm or lever, causes the doors to automatically close.

In the accompanying drawings, forming part of this specification, and in which similar letters of reference indicate similar parts throughout the several Views, Figure 1 is a front elevation, partly in section, of an elevator-cage, guides, and hatchway, showing my invention, the cage being raised and the doors closed; Fig. 2, a similar view showing the cage passing through the hatchway and the doors raised; Fig. 3, an enlarged front elevation of the eccentrically-pivoted disk and adjustable arms or levers; Fig. 4:, a side elevation of the same, and Fig. 5 a front elevation of the disk.

A is the elevator-cage; B B the guides, and O C hatchway-doors.

a a are disks of metal eccentrically pivoted at b to the guides 13 B or to a bracket c carried by these guides. v

To the disks a arms (1 and e aresecured. The arms (1 are operated by friction-rollers D upon the elevator-cage, and the arms a are connected, to the hatchway-doors by rods f. The arms d are attached to the disks to by means of bolts g 71, and the arms e are attached to the disks a by bolts i j, Figs. 3 and 4. The bolts g and '6 pass through arms at and c and through holes 7c Z in the disks a, and the bolts hj pass through the arms and through slots 'm n in the disks to. By loosening the bolts it will be seen that the arms d and 6 may be adjusted so that the best results may be obtained in different cases. The ecceutricallypivoted disk and the arms attached thereto further operate to open the doors at first slowly, and as they are lifted more rapidly. The doors are thus lifted without jar and easily at first, and they and their operating mechanism are not subjected to injurious strains.

From Fig. 1 it will be seen that when the doors 0 C are closed the weight of the disk and arms is thrown upon pivot Z) in such a way as to in a measure counterbalance the weight of the said doors; and from Fig. 2 it will be seen that when the doors are raised the arms (I and 6 take such a position that after the passage of the elevator they will by their weight act to push the door off the dead point, and the door is thus always caused to close after the passage of the cage. IVith the devices ordinarily used it not unfrequently happens that the door, after being raised, rests at such a point that it cannot be closed by the simple action of gravity. \Vhcn the elevator-cage upon its descent engages and depresses the arms d, which are secured to the disks a, it causes the disks a to be partly rotated upon their pivots and to raise the arms e, which are also secured to this disk, and the outer ends of which are, by means of rods f, secured to the hatchway-doors. The disks a are eccentrically pivoted, as before stated, and the arms 61 e are so placed upon the disks that when the cage first strikes and depresses the arms (1 the movement given to arms 6 is at first slow, and as the arms d are further depressed the movement is accelerated, so that the doors are opened quickly and without jar, and the life of the doors and their operating arms, levers, and rods is greatly prolonged. The lower end of arm 6 is preferably bifurcated, as shown in Fig. l, and one end of rod f is pivoted to this arm 6, as shown, and the other end is pivoted to the doors at 0, Figs. 1 and 2.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The herein-described device for auto matically opening and closing the door of a hatchway upon the passage of an elevator, consisting of a disk of metal eoccntrically pivoted to the elevator-frame or to some other suitable support and furnished with two arms, one of which is operated by the elevator on its descent, in order to revolve the disk on its l pivot, and the other of which is connected with the hatchway-door by a rod and operating to open the door slowly at first and more rapidly afterward, and said arms and disk being so arranged with reference to the pivot that after the passage of the elevator-cage their weight, acting on the door through the rod,will operate to push the door off the deadpoint, substantially as and for the purposes set forth.

2. In hatchway-operating devices, the disk a, furnished with holes 7t land slots m n, arms (I e, and bolts g 7L and M, substantially as and for the purposes set forth.

CHAS. F. TAYLOR. \Vitnesses:

OTIs EGAN, CHAs. A. RUT'IER. 

